vm_page_remove(9) [debian man page]

VM_PAGE_INSERT(9)					   BSD Kernel Developer's Manual					 VM_PAGE_INSERT(9)

NAME

     vm_page_insert, vm_page_remove -- add/remove page from an object

SYNOPSIS

     #include <sys/param.h>
     #include <vm/vm.h>
     #include <vm/vm_page.h>

     void
     vm_page_insert(vm_page_t m, vm_object_t object, vm_pindex_t pindex);

     void
     vm_page_remove(vm_page_t m);

DESCRIPTION

     The vm_page_insert() function adds a page to the given object at the given index.	The page is added to both the VM page hash table and to
     the object's list of pages, but the hardware page tables are not updated.	In the case of a user page, it will be faulted in when it is
     accessed.	If the page is a kernel page, the caller is expected to handle adding the page to the kernel's pmap.

     If PG_WRITEABLE is set in the page's flags, OBJ_WRITEABLE and OBJ_MIGHTBEDIRTY are set in the object's flags.

     The vm_page_remove() function removes the given page from its object, and from the VM page hash table.  The page must be busy prior to this
     call, or the system will panic.  The pmap entry for the page is not removed by this function.

     The arguments to vm_page_insert() are:

     m	     The page to add to the object.

     object  The object the page should be added to.

     pindex  The index into the object the page should be at.

     The arguments to vm_page_remove() are:

     m	The page to remove.

IMPLEMENTATION NOTES

     The index of a page in a VM object is the byte index into the same object truncated to a page boundary.  For example, if the page size is
     4096 bytes, and the address in the object is 81944, the page index is 20.

AUTHORS

     This manual page was written by Chad David <davidc@acns.ab.ca>.

BSD
								   July 17, 2001							       BSD

Check Out this Related Man Page

VM_PAGE_GRAB(9) 					   BSD Kernel Developer's Manual					   VM_PAGE_GRAB(9)

NAME

     vm_page_grab -- returns a page from an object

SYNOPSIS

     #include <sys/param.h>
     #include <vm/vm.h>
     #include <vm/vm_page.h>

     vm_page_t
     vm_page_grab(vm_object_t object, vm_pindex_t pindex, int allocflags);

DESCRIPTION

     The vm_page_grab() function returns the page at pindex from the given object.  If the page exists and is busy, vm_page_grab() will sleep
     while waiting for it.  If the page does not exist, it is allocated.  The function sleeps until the allocation request can be satisfied.

     The function requires the object to be locked on entry, and returns with the object locked.  If the vm_page_grab() function sleeps for any
     reason, the object lock is temporary dropped.

     The vm_page_grab() supports all of the flags supported by vm_page_alloc(9).  In addition, vm_page_grab() supports the following flags:

     VM_ALLOC_IGN_SBUSY  When waiting for the busy state of the existing page to drain, only test for exclusive busy; ignore the shared busy
			 counter.

RETURN VALUES

     The vm_page_grab() always returns the page.

SEE ALSO

     vm_page_alloc(9)

AUTHORS

     This manual page was written by Chad David <davidc@acns.ab.ca>.

BSD
								  August 23, 2013							       BSD

Linux and UNIX Man Pages

vm_page_remove(9) [debian man page]

Check Out this Related Man Page